industrial agriculture, threats to food security, food security Flashcards
extensive agriculture
-swidden: necessitates the slashing, cutting, felling, and burning of forested areas for the planting of impermanent garden plots or agricultural fields
pastoralism: deals with animal livestock
intensive agriculture
-capital intensive: require substantial investment in machinery, equipment, infrastructure, and inputs such as fertilizers or pesticides; typically involves large-scale operations with significant financial resources.
-labor intensive: requires large amount of labor for production
benefits of industrial agriculture
1) growth of large cities
2) economic growth: allows industry and services to grow
3) purhasing power goes to other goods (infrastructure)
4) high cost of food is extremely harmful for low income people
5) percent spent on food decline
success of corn
hybridization
key enabler of capital intensive ag
scientific revolution
-selective breeding, gov investment in ag tech
corn’s success also caused
political support for ethanol, negative health impacts
impact of industrial rev
-global food trade explosion=transportation, refridgeration, canning
-new tech to keep foods fresh and cheap
industrializing agriculture also means
mechanization, monocultres, regional sepcialization, pesticides, fertilizers, herbicides
-high tech package that comes from using high yield seeds
effeciency vs resiliancy
resilency should be priortized. wothout it, constant conditions are assumed which opens the door for food insecurity
industrial ag leads to
-decline of rural areas
-loss of bio and genetic diversity of crops
-dietary changes
environmental issues of industrial ag
global food security threats, water, air, land, biodiversity
green revolution
moving from substinence farming to large scale industrial farming
-increases short term profitability
demographic pressures on food security
1) Feeding almost 10 billion people by 2050
2) Assuming a rise in gobal incomes, we will need more grain for livestock
3) Biofuel growth takes farm land out of human supply
cause of food production not rising fast enough
large # of landless people and slow growth in yields cause cuts in the remaining forest and fishery supply
what effect does climate change have on agriculture?
1) excessive precipitation, floods and planting difficulties
2) new pests, disease pressures: competetion and crop damage
3) drought, crop failure
4) loss of natural resources, removes habitats
5) excessive heat: water issues, disrupted pollination
6) high temperatures at night during flowering period drastically decreases yield
7) makes it hard to control pests: blight moving to higher altitudes, higher winter survival rate
soil mismanagement
priortizing short term soil health, the US has high soil erosion rates
what makes agriculture a neglected sector of economic development
insufficiant R and D, especially in vulnerable areas like South Asia and Subsaharan Africa
causes of water stress
1) growing demand because of population growth
2) poor price signals and overconsumption
3) water quality is poor due to pollution levels
4) decreasing supply: rainfall patterns changing, depleting aquafirs
how much water does ag use worldwide
70%
two most important minerals for farming
phosphorous and potassium
why is it hard to get phosphourous and pottassium
mostly in western africa, and there are extraction problems
threats to marine systems
1) oceans resources under pressure
2) global overfishing
3) decline in major atlantic fish like cod and salmon
4) unsustainable fisheries
5) fish size is decreasing
5) nutrient runoff means that coastal environments are damaged
6) coastal deadzones
7) damage in the gulf: harms midwestern farms
coastal hypovia
water conditions where the concentration of oxygen is so low that it is detrimental to organisms and very few organisms can survive in those conditions
coastal eutrophication
occurs when the environment becomes enriched with nutrients, increasing the amount of plant and algae growth to estuaries and coastal waters
causes of coral reef destruction
warm temperatures, ecological changes, disease, destructive fishing practices, coral mining, ag runoff, increased nutrients or algae, overfishing disrupting the eco balance
why are coral reefs essential
protein sources for millions of tropical communities